Questions with the keyword 'expand'

• how quick is the universe expanding by and 1 other. to Andrew, Ash, Gem, Paige, SJ Comments: (so far, 2s comments )
• How do we know that the universe is expanding from the centre, not being pulled out from the edges? by connorhoad to Andrew, Ash, Gem, Paige, SJ Comments: (No comments so far )